simple question concerning "implies"

[Sarah]

Hello everyone,

I have a probably rather simple question concerning "implies" and I am not quite sure why I get the error message.

So I wanted two of my constraints in the MATLAB code to be

Constraints = [Constraints, [implies o, P_th_grid==zeros(N,1)]:'binary district heating'];
Constraints = [Constraints, [implies v, P_gas_th==zeros(N,1)]:'binary gas heating'];

meaning that if o=true, P_th_grid should be zero (and P_gas_th should be zero, if v is true).

MATLAB now gives me the error message

"Index exceeds matrix dimensions.

Error in implies (line 49)
X = varargin{1};

Error in model20190911 (line 356)
Constraints = [Constraints, [implies o, P_th_grid==zeros(N,1)]:'binary district heating'];"

What could be the problem? I'm not really familiar with implies, just tried following
https://yalmip.github.io/command/implies/ (and did it badly, I suppose).

Thanks a lot in advance!!

[Johan Löfberg]

you are missing parenthesis in the call to implies

[Sarah]

Thank you so much for the fast reply!!! It was really parenthesis^^
(I've already tried them but did not realize that a space between "implies" and the parenthesis was a syntax error).